Proceeding on trace elements in soils and crops 

 - London  Her Majesty's Stationery Office        1971 
 - vi,217p.  cm. 
<br/><br/><label>Standard No.: </label>51346 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:1p1,N66, L1